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LARGE DOCUMENT IMAGING SYSTEM

Publishing Venue

Xerox Disclosure Journal

Abstract

The figure illustrates a front view of a full flash illumination and imaging system utilized to copy original documents up to 11" x 17". An 11" x 17" document 10 is disposed on a transparent object plane 12 which is illuminated from beneath by a source of illumination (not shown). A pair of wide angle lenses 14, 16 are disposed between object plane 12 and a photoreceptor belt 18 move in the indicated direction. The lenses are positioned so as to project an image of the portion of the documents within its field of view onto a portion of the belt 18 as defined by field mask 20 positioned above the belt.

Country

Undisclosed

Language

English (United States)

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XEROX DI§CLOSURE JOURNAL

LARGE DOCUMENT IMAGING SYSTEM James D. Rees

Proposed Classification U.S. CI. 355/8 Int. C1. G03g 15/28

l0

Volume 7 Number 5 September/October 1982

335

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LARGE DOCUMENT IMAGING SYSTEM (Cont'd)

The figure illustrates a front view of a full flash illumination and imaging system utilized to copy original documents up to 11" x 17". An 11" x 17" document 10 is disposed on a transparent object plane 12 which is illuminated from beneath by a source of illumination (not shown). A pair of wide angle lenses 14, 16 are disposed between object plane 12 and a photoreceptor belt 18 move in the indicated direction. The lenses are positioned so as to project an image of the portion of the documents within its field of view onto a portion of the belt 18 as defined by field mask 20 positioned above the belt.

In operation, the lens 16 shutter is closed and a first portion of document 10, represented by points B, C, D, is flash illuminated and imaged by lens 14 onto belt 18 at D', C', B'. Belt 18 continues to move in the indicated direction and, after an appropriate time delay, a second flash exposure is made with lens 16 (shutter now open) imaging a second portion A, B, C, of the document onto the photoreceptor belt at points C', B', A'. With appropriate choice of flash timing intervals, the two projected images will overlap in regions C', BI (shown exaggerated for description purposes) to fo...